KOVÁČ, Gabriel - NAGY, Oskar - SEIDEL, Herbert - VLČEK, I. - BANYAI, G.. Zdravie a vysoká mlieková produkcia - pozitívna alebo negatívna?. In: Infovet. 2005. Roč. 12, č. 5 (2005), s. 232-236.

REICHEL, Peter - HÚSKA, Miroslav - KOVÁČ, Gabriel - NAGY, Oskar - BULECA, Ján - BAJAN, Ľudovít - SZAREK, Jan - ZAPLETAL, Piotr. Zaburzenia metaboliczne w relacji do poziomu mocznika w surowicy krwi krow mlecznych [Metabolic disorders in relationship to urea concentration in blood serum of dairy cows]. In: Roczniki naukowe zootechniki. 2004. ISSN 0137-1657, Roč. 31, z. 19 (2004), s. 73-77.

KOVÁČ, Gabriel - NAGY, Oskar - SEIDEL, Herbert - REICHEL, Peter - HISIRA, Vladimír - NOVOTNÝ, Jaroslav. THE IMPORTANCE OF PREVENTIVE DIAGNOSIS IN A DAIRY FARM WITH INCREASING MILK PRODUCTION. In: Folia veterinaria. 2004. ISSN 0015-5748, Roč.48, č.4 (2004), s.206-212.

KOVÁČ, Gabriel - KONVIČNÁ, Jana - JESENSKÁ, Mária - SEIDEL, Herbert - NAGY, Oskar - LINK, Róbert. THE RELATIONSHIP BETWEEN CONCENTRATIONS OF SELENIUM AND GLUTATHIONE PEROXIDASE ACTIVITY IN THE WHOLE BLOOD OF DAIRY COWS. In: Folia veterinaria. 2004. ISSN 0015-5748, Roč.48, č.3 (2004), s.152-156.

NAGY, Oskar - SEIDEL, Herbert - KOVÁČ, Gabriel - PAULÍKOVÁ, Iveta - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária. Dynamics of acid-base balance and blood gases in calves up to six month of their age. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 573-578.

FIĽAKOVSKÁ, M. - KOVÁČ, Gabriel - NAGY, Oskar - LINK, Róbert - MUDROŇ, Pavol - PAULÍKOVÁ, Iveta - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária. Haematological parameters in calves hospitalised at II. Internal clinic. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajdúszoboszló, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 584-586.

JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert - KOVÁČ, Gabriel. Lead distribution in muscles and viscera of cattle. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 589-590.

KONVIČNÁ, Jana - KOVÁČ, Gabriel - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert. Relationships between concentrations of selenium and glutathione peroxidase activity in the whole blood of dairy cows. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajduszoboszlo, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 579-583.

HIŠČÁKOVÁ, Mária - JESENSKÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert - KOVÁČ, Gabriel. Study of cadmium concentrations in cattle in Slovakia. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 587-588.

MUDROŇ, Pavol - NAGY, Oskar - MANDELÍK, René - KOVÁČ, Gabriel. Bachorová acidóza a pečeňové abscesy u dojníc [Ruminal acidosis and liver abscesses in dairy cows]. In: Dni výživy a veterinárnej dietetiky "VI." Aktuálne otázky výživy, produkcie a zdravia hospodárskych zvierat. 7.-8.september 2004. Bratislava : Štátna veterinárna a potravinová správa SR Bratislava, 2004. 2004. ISBN 80-8077-009-3, s. 337-340.